Have you ever asked yourself what the most difficult job on the railroad would be? In Cochrane Yard, this is definitely one of them. It's somewhere between -40 to -45 Celsius on February 1st as workers Brigitte and Rob tackle the frigid temperatures, the ice build-up, and fresh snow while loading and chaining down vehicles to chain car 100506 (a former TTX 89 foot flat) which will be making the morning's trip to Moosonee on the 421 Polar Bear.